Hecho general: 53542 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 53542 is a boring number.
Trivia: 53542 is an uninteresting number.
Fecha histórica: August 4th is the day in 1975 that the Japanese Red Army takes more than 50 hostages at the AIA Building housing several embassies in Kuala Lumpur, Malaysia.